Hello Beatricel53 Thank you for your question. The Roomba j7/ j7+, unlike the Roomba i7/i7+, has Precision Vision Navigation. For example, it recognises objects such as charging cables, socks or dog's droppings and avoids them. If it has also bumped into such objects, it will ask you after cleaning whether these are permanent obstacles, whether they should be marked as a prohibited zone or whether they should be cleaned in the future anyway - if you would like to have this setting activated. If you have any further questions or uncertainties, please feel free to contact us directly. Of course, there are also comparison tables that could make the selection easier :) Best regards, Your iRobot Team
The J7+ recognises cables and, if you have pets, also piles of excrement and does not push the whole thing across the flat. There are various test films that you can watch.